Dr Hagen completed a Bachelor of Science at the University of Sydney in 2004 , prior to moving to London to work and travel. Dr Hagen returned to Sydney and completed her post-graduate medical degree at the University of Sydney in 2010. She worked for 2 years across St George, Sutherland and Albury Hospitals. Dr Hagen then completed a year as a senior resident in the Royal Prince Alfred Hospital emergency department, during which time she completed her Certificate in Emergency Medicine. One year (and one baby!) later, Dr Hagen entered General Practice training and recently completed training for the Royal College of General Practitioners (F.R.A.C.G.P.) in July 2016.